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IBM IOS Developer Interview Questions and Answers
IBM IOS Developer Interview Experiences
3 interviews found
Anonymous
Easy aptitude english and logical reasoning.
(2 Questions)
- Q1. Tell me About yourself
- Ans.
I am an experienced IOS Developer with a passion for creating innovative and user-friendly mobile applications.
Over 5 years of experience in IOS app development
Proficient in Swift and Objective-C programming languages
Strong understanding of mobile UI/UX design principles
Familiar with RESTful APIs and third-party libraries
Developed and launched multiple successful apps on the App Store
- Q2. Swift advantages and disadvantages
- Ans.
Swift is a powerful and modern programming language for iOS development, but it has its own set of advantages and disadvantages.
Advantages: faster performance, safer code with optionals, easier to read and write code, interoperability with Objective-C
Disadvantages: steep learning curve for beginners, limited community support compared to other languages like Java or Python
(1 Question)
- Q1. Salary expectation and current salary
Skills evaluated in this interview
(5 Questions)
- Q1. Multi threading
- Q2. Generic function
- Q3. Dependency injection
- Q4. Struct vs Class
- Ans.
Struct is a value type, Class is a reference type in Swift.
Structs are passed by value, Classes are passed by reference.
Structs are immutable by default, Classes are mutable.
Use Structs for simple data types, Classes for more complex objects.
- Q5. Type inference, type casting
Skills evaluated in this interview
I applied via LinkedIn and was interviewed in Aug 2023. There were 2 interview rounds.
Remove duplicate elements from list.
(2 Questions)
- Q1. What is the reason to change the job?
- Q2. I was exploring for growth opportunities and IBM is a good organization to grow looking at its ML technologies IBMWatson.
What people are saying about IBM
Interview questions from similar companies
I applied via Naukri.com and was interviewed in Sep 2020. There were 4 interview rounds.
Interview Questionnaire
5 Questions
- Q1. Swift Basics
- Q2. IOS Concepts
- Q3. Design patterns
- Q4. Architectural patterns
- Q5. Multi threading and concurrecy
Interview Preparation Tips
Also communication is important for some campanies.
I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. All basics of swift. Enums optionals closures protocols etc
- Q2. Best feature you like of swift
- Q3. App live all steps
- Q4. Certificates information
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jan 2022. There were 3 interview rounds.
(1 Question)
- Q1. Basic iOS Questions which you can find from the internet What is Class & Structure Optional, Tupple
(1 Question)
- Q1. Tricky question based upon manager Team management Handling multiple junior developers under you.
(4 Questions)
- Q1. What are your salary expectations?
- Ans.
I expect a competitive salary based on my experience and skills.
I have a strong background in iOS development and have successfully completed several projects.
I am familiar with the latest technologies and frameworks in iOS development.
I have a proven track record of delivering high-quality code on time and within budget.
I am confident that my skills and experience make me a valuable asset to any team.
I am open to disc...
- Q2. Share details of your previous job.
- Ans.
I worked as an iOS Developer at XYZ Company.
Developed and maintained iOS applications using Swift and Objective-C.
Collaborated with cross-functional teams to gather requirements and deliver high-quality products.
Implemented new features and enhancements based on user feedback.
Optimized app performance and resolved bugs and issues.
Worked on integrating third-party libraries and APIs.
Participated in code reviews and prov...
- Q3. Why are you looking for a change?
- Ans.
I am looking for a change to explore new opportunities and challenges in my career.
Seeking growth and advancement in my professional journey
Want to work on more challenging projects
Desire to learn new technologies and expand my skillset
Looking for a better work-life balance
Seeking a company culture that aligns with my values and goals
- Q4. Tell me about yourself.
- Ans.
I am an experienced iOS developer with a passion for creating user-friendly and efficient applications.
I have been developing iOS applications for over 5 years.
I am proficient in Swift and Objective-C programming languages.
I have experience working with various frameworks and libraries such as UIKit, Core Data, and Alamofire.
I have a strong understanding of iOS design patterns and best practices.
I have successfully del...
Interview Preparation Tips
- Swift
- Objective C
- IOS
I applied via LinkedIn and was interviewed in Jan 2022. There was 1 interview round.
(1 Question)
- Q1. Swift basic questions
Interview Preparation Tips
(3 Questions)
- Q1. Basic of swift and some questions related to your past work experience.
- Ans.
Questions about basic Swift knowledge and past work experience.
Basic Swift concepts such as optionals, closures, and protocols may be asked.
Questions about past projects and how you approached problem-solving may also be asked.
Examples of past work experience and projects may be requested.
Questions about Swift syntax and best practices may be asked as well.
- Q2. Clean coding principles
- Ans.
Clean coding principles ensure code readability, maintainability, and scalability.
Use meaningful variable and function names
Keep functions short and focused
Avoid code duplication
Follow SOLID principles
Write unit tests
Refactor regularly
- Q3. They may ask your approaches to solve problems.
Interview Preparation Tips
Selected
I applied via Recruitment Consulltant and was interviewed in Mar 2024. There was 1 interview round.
(2 Questions)
- Q1. What is closure? Life cycle of escaping closure?
- Ans.
A closure is a self-contained block of code that can be passed around and used in your code. An escaping closure is a closure that is called after the function it was passed to has returned.
Closure is a block of code that can be passed around and used in your code.
Escaping closure is called after the function it was passed to has returned.
Example: Using a completion handler in a network request to handle the response a
- Q2. What is multi threading?
- Ans.
Multi threading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness in applications.
Allows for parallel execution of tasks, improving performance
Enables applications to remain responsive while performing intensive tasks
Can lead to synchronization issues if not managed properly
Interview Preparation Tips
- Closure
- IOS
- Design Patterns
- Multithreading
Skills evaluated in this interview
Interview Questionnaire
6 Questions
- Q1. What’s difference between class and structure
- Ans.
Classes and structures are both used to define custom data types, but they have some key differences.
Classes are reference types, while structures are value types.
Classes support inheritance, while structures do not.
Classes have deinitializers, while structures do not.
Classes have reference counting for memory management, while structures do not.
Classes can have optional property types, while structures cannot.
- Q2. What’s retain cycle how you can avoid
- Ans.
Retain cycle is a memory management issue where objects reference each other and cannot be released. It can be avoided by using weak or unowned references.
Retain cycle occurs when two or more objects hold strong references to each other.
To avoid retain cycle, use weak or unowned references instead of strong references.
Weak references do not increase the reference count of an object and automatically become nil when the...
- Q3. What’s opinion binding
- Ans.
Opinion binding is a legal doctrine that requires judges to follow the decisions of higher courts in similar cases.
Opinion binding is also known as stare decisis.
It helps to ensure consistency and predictability in the legal system.
For example, if a higher court has already ruled that a certain law is unconstitutional, lower courts must follow that ruling in similar cases.
Opinion binding can be controversial, as it can...
- Q4. Difference between GCD and operation Queues
- Ans.
GCD and Operation Queues are both used for concurrent programming in iOS, but differ in their approach.
GCD is a C-based API that uses a thread pool model for concurrency.
Operation Queues are built on top of GCD and provide a higher-level abstraction for concurrency.
GCD is best for simple, lightweight tasks, while Operation Queues are better for more complex tasks with dependencies.
GCD uses blocks for task execution, wh...
- Q5. Explain the Life cycle of iOS applications
- Ans.
The life cycle of iOS applications refers to the stages an app goes through from launch to termination.
The app is launched by the user or system
The app enters the foreground and becomes active
The app can be sent to the background or suspended
The app can be terminated by the user or system
The app can be resumed from the background or suspended state
The app can receive memory warnings and handle them appropriately
- Q6. Explain the life cycle of UIviewController
- Ans.
The UIViewController life cycle consists of several stages that occur when the view controller is loaded and unloaded.
viewDidLoad() - called when the view controller's view is loaded into memory
viewWillAppear() - called just before the view appears on the screen
viewDidAppear() - called just after the view appears on the screen
viewWillDisappear() - called just before the view disappears from the screen
viewDidDisappear()...
Skills evaluated in this interview
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IBM IOS Developer Interview Process
based on 3 interviews
Interview experience
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IBM IOS Developer Reviews and Ratings
based on 4 reviews
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